Groat-cutting machine



Uct. 114, 1924 L. E. SMITH GROAT. CUTTING MACHINE Patented Oct. l4, i924.

Louis E SMITH, or new PRAGUE, MINNESOTA, ASSIG-NOR 'ro ROBIN noon MILLS LIMITED, or MOOSE Jaw, snskarorrnwnn, CANADA.

GBO'AT-CUTTING MACHINE.

Application filed June 20,

To all whom it may concern:

Be it known that 1, Louis E. SMITH, of the city of New Prague, in the State of Minnesota, U. S. A., a citizen of the United States of America, have invented certain new and useful Improvements in Groat- Cutting Machines, of which the following is a specification.

This invention relates to machines particularly adapted for cutting oat groats into granulated oatmeal, and my object is to devise a machine for this purpose having great capacity and adapted to turn out an entirely satisfactory product. p

The basis of the machine is a perforated rotary cylinder into which the groats are introduced, and are cut, as they project through the perforations, by knives fitted closely against the outside of the cylinder.

I attain the desired results by providing positive easily regulable feeding means; by employing substantially the maximum number possible of knives around the cylinder; by employing means for agitating the groats and distributing them over the operative surface of the cylinder; and by employing means for ridding the cylinder of barley, wheat or oversize groats and surplus of groats fed to the cylinder.

The invention is hereinafter more fully described and is illustrated in the accompanying drawings in whicl Fig. 1 is an end elevation;

Fig. 2 a side elevation, partly broken away;

Flg. 3 a vertical section on the line 3-3 in Fig. 2, of one of the cylinders and its connected parts on a larger scale; and

Fig. 4 a cross section of the cylinder on the same scale. 1

1 is the frame of the machine suitably shaped to support the different parts. On this frame is journalled the shaft 2 to which are connected one or more cylinders 3. These cylinders are each formed with one open end, which is closed when the cylin-- der is in position in the machine by a sta tionary disk 4 suitably supported from the frame 1. In the stationary disk is formed a spout 5, the upper part of which is formed by an apertured casting 6 secured to the rim of the disk. Over each spout is located a feed hopper 7 which is adapted to discharge to a funnel 8 communicating with 1923. Serial No. 646,530.

the apertured casting 6. At the bottom of the hopper is located a feed roll 9 secured to a shaft 10 journalled in the sides of the hoppers.

With each feed roll cooperates an adjustable slide 11 supported onthe side of the hopper. By adjusting this slide the discharge opening of the hopper is regulated as may be necessary. On the shaft 10 is secured a pulley 12 which is driven by a belt from the pulley 13 on the shaft 2. This shaft is provided with suitable means for driving the same, such, for example, as the sprocket wheel 14. From the above description it will be seen that the feed rollers are operated at a speed proportionate to the speed of the shaft 2 and the cylinders 3 driven thereby, and that a positive feed is thus provided the rate of which may be regulated by adjusting the slides 11.

The cylinders 3 are provided with perforations 15 of such a size as to permit the groats to be cut while projecting partly through the same from the inside. Round the periphery of each cylinder is supported a set of knives 16. These knives extend round an arc of the circle of each cylinder of approximately 180, this being the extent of the working circumference of the cylinder.

Usually the operative surface commences at a point in the rear side of the cylinder located about behind the vertical at the lower side and ends at a point about 45 above the horizontal at the forward side of the cylinder. I have found that the greatest output of cut groats is obtained when these knives are as numerous as possible, which result is obtained when the width of each knife is approximately not more than twice the thickness of the rim of the cylinder, as the groats are then cut as rapidily as they project sufficiently far through the perfora tions in the cylinder.

The groats passing-through the spout 5 drop on to a chute 17, which is downwardly and rearwardly inclined and directs the in coming groats against the descending side of the drum.

To agitate the uncut groats and to lift them so that they may be carried back to the beginning of the operative arc of the circumference of the cylinder, I provide the cup-shaped agitators 18 which are secured mvnnti V to the end of each cylinder opposite the disk rOrmQd Wahnaring lips 191 arnest-tapas.

lated-"by aa sna the slides' 1 -1: an a prefrablefto irov i'de each cylinder with an overlies? This is 'best effected by forming openings 21 in each disk slat such a distance f om the periphery'of the cylinder as to per- I mit of s nature of groa ts of a desired thickgo e inner periphery ofthe eyliece'ssary tdpi vide' means for. disck iii tlie jgierforations l5,aiid for iiiirposfili'providie rgi'each cylinder a toot-lied- Wheels 221' which are iitedoii a 'eornn o "snare and adapted to t 1ndthe 13eiIfYi Ii tioiisI5 as the cyliii 1 re; reat; tang niaclrine, the coinbif 'na"'" td'rdtaryf'cylinder havstationary disk closing e std lonary liiiives'fitted closely" againstfthe eit'e'inal" periiiheiiyf off the cylinder 'ine'aiis n 3. 9;: an y z) L.

disk 4 throughwhich access may be had to indfrj." 'Phs 'e apertures enera; get-Yiid of ris s iicli swneat rbarley which ed witli'theioats and also-to get 0- anyffo versize' greats Whiclrivill-"not" piss' throiighthie'perforations '15;

y particlesiof greats which may fymidfi e reality of ing an open endga stationary disk closing.

said open end ofthe cylinder a plurality-of stationary knives fitted-closely against the external periphery of the cylinder; means for feeding groats at a fixedrate into the cylinder; and an overflow aperture inthe stationary disk. 4 Ina'groat cutting machine the combination of 'a perforated rotary cylinder hav ing'one endopen; aplurality of stationary knives fitted closely against't-he external peri phery'of-the cylinder; astationary disk closing the open end of the cylinder; a feed spfonflopenin'g through saiddis'k into the iiiterionofthe cylinder; an inclincd-c liute coln nected to saiddislr below the feedspout, and directed -towards the downwardly moving side of the cylinder; and-.lifting'devicesse cnrefdtothe end of the cylin'der'adaptedto, raise greats an'd'drop'them on the chute. 1 I LOUIS-EjSMIT-H. Witnesses: I

J. M) BRUZEN; 'J; J. "Kovniiri 

